package common;

public abstract class Sudokus {
	public static final int EMPTY_NUMBER = -1;

	public static final int DEFAULT_BOX_SIZE = 3;
	public static final int DEFAULT_GRID_SIZE = DEFAULT_BOX_SIZE * DEFAULT_BOX_SIZE;

	public static final int MAX_BOX_SIZE = 10;

	public static boolean isEmpty(int number) {
		return EMPTY_NUMBER == number;
	}

	public static boolean notEmpty(int number) {
		return EMPTY_NUMBER != number;
	}

	private Sudokus() {
	}
}
